A man who narrowly escaped an explosion that leveled his eastern New York home and killed six people has been indicted on charges he tampered with a propane gas line, leading to the blast.

The Glens Falls Post-Star reports that 33-year-old Steven McComsey of North Creek is set to be arraigned Thursday on six counts of second-degree manslaughter and two of reckless endangerment. He isn't accused of intentionally causing the explosion at the home in Salem, but authorities say he was responsible.

Investigators said a spark from a water pump switch ignited propane that had leaked and accumulated in the cellar, causing the explosion that killed six of the 11 people inside on July 13.